#13697: Teach GHCi to deduplicate history -------------------------------------+------------------------------------- Reporter: bgamari | Owner: (none) Type: bug | Status: new Priority: normal | Milestone: Component: GHCi | Version: 8.0.1 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by goldfire): My command prompt (Mac's `Terminal`) doesn't do this (that is, deduplicate). It's not behavior I would expect. Where can I witness this in action? -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/13697#comment:2 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler

#13697: Teach GHCi to deduplicate history -------------------------------------+------------------------------------- Reporter: bgamari | Owner: (none) Type: bug | Status: new Priority: normal | Milestone: Component: GHCi | Version: 8.0.1 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by nomeata): What I observe in bash (and miss in ghci as well) is that {{{ $ ls $ ls $ history |tail -n 3 4992 man bash 4993 ls 4994 history |tail -n 3 }}} i.e. there are no *successive* duplicated entries. But {{{ $ ls $ echo hi $ ls $ history |tail -n 4 4995 ls 4996 echo hi 4997 ls 4998 history |tail -n 4 }}} so there is no duplication of everything. I believe the OP asks for the former (and I support this.) }}} -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/13697#comment:4 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler

#13697: Teach GHCi to deduplicate history -------------------------------------+------------------------------------- Reporter: bgamari | Owner: (none) Type: bug | Status: new Priority: normal | Milestone: Component: GHCi | Version: 8.0.1 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by goldfire): I'm very confused. The following is on a Linux machine: {{{ 12:22:05@powerpuff ~> echo $0 -bash 12:22:27@powerpuff ~> echo "hello" hello 12:22:33@powerpuff ~> echo "hello" hello 12:22:35@powerpuff ~> history | tail -n 4 510 echo $0 511 echo "hello" 512 echo "hello" 513 history | tail -n 4 12:22:41@powerpuff ~> }}} I have no recollection of ever considering this issue, so I don't believe I've set a configuration somewhere to change it. (And I looked at my `.bashrc` and see nothing working in this direction.) It's not that I'm opposed to the feature as proposed, exactly, but I feel like I'm missing some small superpower that the rest of you share... -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/13697#comment:6 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler

#13697: Teach GHCi to deduplicate history -------------------------------------+------------------------------------- Reporter: bgamari | Owner: (none) Type: bug | Status: closed Priority: normal | Milestone: Component: GHCi | Version: 8.0.1 Resolution: invalid | Keywords: Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Changes (by bgamari): * status: new => closed * resolution: => invalid Comment: Ahhh, [[https://github.com/judah/haskeline/wiki/UserPreferences|it seems]] that this already exists. Just, {{{#!bash echo "historyDuplicates: IgnoreConsecutive" >> ~/.haskeline }}} -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/13697#comment:8 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler